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Loughmiller, Campbell and Lynn
Allionia incarnata L.
Trailing windmills, Trailing four o'clock, Pink windmills, Trailing allionia
USDA Symbol: ALIN
USDA Native Status: L48 (N)
The orchid-colored trailing four-o’clock is a vine that grows along the ground; the plant may be 10 feet across. The stems, leaves, and buds are covered with soft white hair. The stems and flowers are sticky, and one rarely finds a flower without grains of sand stuck on the upper surface. Technically, what appears to be 1 flower is a cluster of 3 resembling a single radially symmetrical flower but no one but a trained botanist would ever guess it.
The flowers remain open most of the day, not just in the evening as suggested by the name. The other species, Smooth Trailing Four-oclock (A. choisyi), from Arizona to Texas and southward, has a perianth 3/16 of an inch (5 mm) long or less, and the curved edges of the fruit each bear 5-8 slender, gland-tipped teeth.
Plant CharacteristicsDuration: Perennial Habit: Herb Size Notes:
Ground cover Flower:
Fruit: Size Class:
Bloom InformationBloom Color: Pink
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct
, UT Native Distribution:
Southeastern California to southern Utah and Colorado; south to Texas, Mexico, and beyond. Native Habitat:
Dry gravelly or sandy soils in sun.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Sibley Nature Center
- Midland, TX
Herbarium Specimen(s)NPSOT 0616
Collected Oct 30, 1993 in Comal County by Mary Beth White
Record Last Modified: 2013-07-15
Research By: TWC Staff